Fan-motor.



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IFANMOTGR Specification of Letters Patent.

rat-enten oet. is, i915.

Application filed December 23, 1912. Serial No. 738,118.

To all whom t may concern:

Be it known that I, CHESTER LHALL, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have inventedl a certain new and useful Improvement in Fan-Motors, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawing, forming a part of this specification.

My invention relates to an improved form of fan motor in Which the motor and fan are Wholly inclosed, preferably in a spherical shell, and said shell is so mounted that it may readily be given any desired adjustment upona supporting base so that the air driven from the fan may he projected at any desired angle, no mechanical devices being used to connect the shell and the supporting hase;

manner, .l prefer to construct these parts so that the shell rests upon the base Without of ,the Weight of the shell and the parte ,contained therein.

rlhe shell` in the preferred form o" my invention is provided With a discharge orifice through Which the air isprojected by a deflecting nozzle so that the air leaving the fan assumes the form of a substantially parallel column, instead of bei-ng diffused lover a Wide area as is oustomary in conneetionwith fan motors. The' dischargeorifice is preferably covered by a protecting screen-to prevent accidents by engagement Withthe `fan proper, although the mesh of the screen is not small enough to prevent the ready passage through the air delivered from the fan,v The side of the shell opposite to the discharge 'orifice is preferably provided with a plurality of small intake openings as a result oi which the air which is delivered from the discharge oriiice rst passes through and around the motor, thus serving to keep the same cool. l

I do not limit my invention to a spherical shell and may employ other forms of shells, or the shell may be entirely dispensed with and the substantially parallel column of air delivered by the fan may result from a curved conformation of the fan blades rather than from the operationof' a directing nozzle. My invention is particularly While ,the shell and base may be se-4 cured together if desired, in any Well known successful for small fan motors which be used Where a very limited circulation or draft by means of ay column of air is desired, as, for instance, in offices Where the requirement is that a mild stream of air be projected against the occupant of the ol'hce, as, for example, in Warm weather, While at the same time, it is) desirable to protect papers that may he upon the ohce desk from being Ithrown around by the breeze. My invention particularly meets this need since the parallel column of air is projected from the shell at a suiicient height to clear the papers that may be on the desir, and .by directing the column slightly up- Ward as is usually the case, the possibility of disarranging papers is avoided.

The urtherfdesirahle feature secured. by my invention is the great reduction iny the amount of power and energy required lo drive the ian, which. results in a properm tional saving in the expense of operation .the fan.

- The severaldra-Wings illustrating my in-` vention are as follows:

Figure l shows the preferred form of ,my invention in elevation, the inclosing shell and a part of the base being in section to I more clearly show the parts Within the shell.

Fig. 2 shows a modified construction in which the parallel direction given the air is determined hy the conformation of the ian blades.

Similar numerals refer to similar parts throughout the several views.

As shown in Fig. i the fan motor l vis mounted Within a spherical shell 2 provided at its left-hand side with 'a circular disN charge orifice 8. The Vshaft 4 or". the motor has mounted upon its left-hand end a ian 5 by which air is projected into a-converging nozzle G terminating at its left-hand end 'in the discharge oritice or aperture 3. The opposite side of the shell is provided With a plurality of small holes 7, which are or" sufficient number to permit the air to enter. the shell and be projected therefrom, by

means oi the fan. The air thus entering, circulates around and through the motor l,

.before engaging the fan 5, by which it is projected into the nozzle 6. The nozzle or directing tube 6 is so formed that the air rprojected through it is delivered from the' shell in a substantially parallel column 8, hy

which interference with papers or other iro light articles which' may be near thefan is avoided and the air is projected more effectively toward the point desired. -The screen 9'is secured to the shell 2 over the discharge opening 3,' so .as to prevent injury by accidental contact `with the fan 5, and the mesh so as to be stable and its upper concave surface is preferably lined with a material such as felt indicated at 13 to engage the outer surface of the shell 2 to hold it in any adjustment thatpinay be given to it. As all of the parts of the fan motor are contained within the' shell, the center of gravity of these parts is not far from the center. 'of said shell, asia result of which there is little tendency for the shell tochange its adjustnient since the reactive effect of the fan 5 upon the air is small compared with'the.

weight of the shell and the parts contained therein.,

W'iiile I do not limit myself to any particular size ofconstruction, it is to be under-v stood that the structure which is described is particularly desirable i'f'or small size fan motors, such, for example, as those for which the inclosing shell may bemade of troni to 6 inches in diameter. Motors of this size require but little care and therefore are not expensive to operate, and' yet their etectiveness by means of the construction described is considerable as the air is converged and concentrated upon certain points rather than being widely'distributed as is ordinarily the case in fan motor operation.

In the modified, construction shown in F ig. 2, the motor 1a is provided with .feet ltfor resting'upon the desk or other supporting surface and the shaft d carries fan blades 5a of suoli conformation that when the ,shaft is rotated in the direction indicated by the arrow, the air projected by the blades .5 is thrown from the fan in a converging direction which results inproducing a substantially parallel column of air which is concentrated upon the point of application in a manner similarto that de scribed .above in connection with Fig. 1. Whileothis modification of my invention does Igot afford the saine protection .from

.hase whereby may be positioned so as'to direct a stream stray aircurrents as that shown in Fig. 1, it may be employed with similar results under many conditions.

While I have shown my invention in the particular embodiments described above, I do not, however, limit myself to these particular constructions, as I may employ equivalent devices without departing from the spirit of my invention.

What I claim is:

1. In combination, a motor', a fan secured to the motor shaft and driven thereby, a spherical inclosing shell surrounding the fan and motor, a directing nozzle in the shell for projecting air through the shell and from the fan inv a 'substantially iiniform column, a protecting screen extending over the discharge end of the nozzle, said shell having a plurality of intake holes formed through its side opposite to the directing nozzle, and. a supporting base having a concave upper surface for engaging said shell, a friction pad on said the spherical inclosing .shell o1n air from said nozzle at ing vertical.

2. In combination a substantially spherical hollow casing, a support for said casing, said support comprising a concave surface on which said casing rests, an opening in said casing, a motor mounted'insaid casing and fixed thereto and a fan operatively connected with said motor located within said casing arranged topi-eject stream of air through the opening'in the casing, said casing being free to be turned on its support whereby' the stream of air emitted from the openingin the casing may be' directed as desired. I

3. In `combination a substantially spherical hollow casing, an opening in the casing, a motor-hired within the casing, a fan conf nected with said motor located within said casingadjacent said opening and arranged to project said spherical casing being adjustably mounted so that the stream of air emitted therefrom may be directed as desired.

In witness whereof, I hereunto subscribe any angle, includmy name this 16th day of December, A. D.,

CHESTER I. HALL. Witnesses:

ALBERT BELL, LESLIE W. FnIoKE.

said directing a stream of air from the casing, i 

